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ubi: use blk_mq_alloc_disk and blk_cleanup_disk

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Use blk_mq_alloc_disk and blk_cleanup_disk to simplify the gendisk and
request_queue allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210602065345.355274-27-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:41 +03:00 committed by Jens Axboe
parent 3b62c140e9
commit 77567b25ab
1 changed files with 30 additions and 40 deletions
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70
drivers/mtd/ubi/block.c
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@ -394,28 +394,6 @@ int ubiblock_create(struct ubi_volume_info *vi)
dev->vol_id = vi->vol_id;
dev->leb_size = vi->usable_leb_size;
/* Initialize the gendisk of this ubiblock device */
gd = alloc_disk(1);
if (!gd) {
pr_err("UBI: block: alloc_disk failed\n");
ret = -ENODEV;
goto out_free_dev;
}
gd->fops = &ubiblock_ops;
gd->major = ubiblock_major;
gd->first_minor = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL);
if (gd->first_minor < 0) {
dev_err(disk_to_dev(gd),
"block: dynamic minor allocation failed");
ret = -ENODEV;
goto out_put_disk;
}
gd->private_data = dev;
sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
set_capacity(gd, disk_capacity);
dev->gd = gd;
dev->tag_set.ops = &ubiblock_mq_ops;
dev->tag_set.queue_depth = 64;
dev->tag_set.numa_node = NUMA_NO_NODE;
@ -427,19 +405,34 @@ int ubiblock_create(struct ubi_volume_info *vi)
ret = blk_mq_alloc_tag_set(&dev->tag_set);
if (ret) {
dev_err(disk_to_dev(dev->gd), "blk_mq_alloc_tag_set failed");
goto out_remove_minor;
goto out_free_dev;;
}
dev->rq = blk_mq_init_queue(&dev->tag_set);
if (IS_ERR(dev->rq)) {
dev_err(disk_to_dev(gd), "blk_mq_init_queue failed");
ret = PTR_ERR(dev->rq);
/* Initialize the gendisk of this ubiblock device */
gd = blk_mq_alloc_disk(&dev->tag_set, dev);
if (IS_ERR(gd)) {
ret = PTR_ERR(gd);
goto out_free_tags;
}
blk_queue_max_segments(dev->rq, UBI_MAX_SG_COUNT);
dev->rq->queuedata = dev;
dev->gd->queue = dev->rq;
gd->fops = &ubiblock_ops;
gd->major = ubiblock_major;
gd->minors = 1;
gd->first_minor = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL);
if (gd->first_minor < 0) {
dev_err(disk_to_dev(gd),
"block: dynamic minor allocation failed");
ret = -ENODEV;
goto out_cleanup_disk;
}
gd->private_data = dev;
sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
set_capacity(gd, disk_capacity);
dev->gd = gd;
dev->rq = gd->queue;
blk_queue_max_segments(dev->rq, UBI_MAX_SG_COUNT);
/*
* Create one workqueue per volume (per registered block device).
@ -448,7 +441,7 @@ int ubiblock_create(struct ubi_volume_info *vi)
dev->wq = alloc_workqueue("%s", 0, 0, gd->disk_name);
if (!dev->wq) {
ret = -ENOMEM;
goto out_free_queue;
goto out_remove_minor;
}
list_add_tail(&dev->list, &ubiblock_devices);
@ -460,14 +453,12 @@ int ubiblock_create(struct ubi_volume_info *vi)
mutex_unlock(&devices_mutex);
return 0;
out_free_queue:
blk_cleanup_queue(dev->rq);
out_free_tags:
blk_mq_free_tag_set(&dev->tag_set);
out_remove_minor:
idr_remove(&ubiblock_minor_idr, gd->first_minor);
out_put_disk:
put_disk(dev->gd);
out_cleanup_disk:
blk_cleanup_disk(dev->gd);
out_free_tags:
blk_mq_free_tag_set(&dev->tag_set);
out_free_dev:
kfree(dev);
out_unlock:
@ -483,11 +474,10 @@ static void ubiblock_cleanup(struct ubiblock *dev)
/* Flush pending work */
destroy_workqueue(dev->wq);
/* Finally destroy the blk queue */
blk_cleanup_queue(dev->rq);
blk_mq_free_tag_set(&dev->tag_set);
dev_info(disk_to_dev(dev->gd), "released");
blk_cleanup_disk(dev->gd);
blk_mq_free_tag_set(&dev->tag_set);
idr_remove(&ubiblock_minor_idr, dev->gd->first_minor);
put_disk(dev->gd);
}
int ubiblock_remove(struct ubi_volume_info *vi)